JP2010530034A - Equipment for needling fleece web - Google Patents

Abstract

The invention relates to a device for needling a nonwoven web having on the base thereof at least one needle bar comprising a needle board having a plurality of needles. The needle bar is held by a bar carrier on which a vertical drive engages for oscillating motion of the bar carrier for an up and down movement. A superimposed horizontal drive is also associated with the bar carrier, by which a back-and-forth movement is induced. The horizontal drive has two eccentric drives coupled to a horizontal guide. The eccentric drives are each formed by a connecting rod and a crankshaft coupled to a connecting head of the connecting rod. According to the invention, the connecting rods are coupled to the horizontal guide with the connecting rod ends thereof in a diagonal orientation, the center axes of the connecting rods forming an angle.

Description

  The present invention is an apparatus for needling a fleece web, wherein at least one needle bar is provided, the needle bar having a needle board with a plurality of needles on the lower surface thereof, and A vertically driven bar coupled to the bar support, provided with a movably held bar support for holding the needle bar and acting to vibrate the bar support in the vertical direction; There is provided a horizontal drive that serves to oscillate the body in a horizontal direction, the horizontal drive being at least one horizontal link coupled to the bar support, and at least two connected to the horizontal link. Each of which is formed by a connecting rod and a crankshaft connected to the connecting rod head of the connecting rod. Format on things.

  Known devices are used to reinforce or strengthen and structure the fleece. For this purpose, the fleece web is pierced by a number of needles, which are guided in an oscillating lifting movement. Thereby, during this process, the needle is guided by an oscillating vertical movement in order to reinforce the fiber material in the fleece web. During this process, the fleece web is always fed and moved forward, and this feeding movement is preferably carried out by rollers. The needle is not smooth and has a barb that is open in the piercing direction, so that the fleece filament is captured and can be redirected in the fleece. This provides the desired entanglement and reinforcement effects within the fleece. In order to prevent inconvenient deformation based on the fleece web feed during needle piercing into the fleece web, i.e. e.g. long hole formation or distortion in the needled material, Guided with superimposed horizontal motion. In this case, the movement of the needle is directed in the feed direction of the fleece web. In order to carry out a vertical movement and a horizontal movement superimposed on it in the needle, basically two different drive configurations are known in the prior art.

  In a device for needling a fleece web of the type mentioned at the beginning, known from DE 197 30 532 A1, the needle bar has a vertical drive device for carrying out the lifting movement and a separate body for carrying out the reciprocating movement in the horizontal direction. Coupled to a horizontal drive. The horizontal drive device is formed by two eccentric drive devices driven in opposite directions, and both eccentric drive devices are formed by two connecting rods arranged in parallel to each other and a crankshaft connected to the connecting rods. Has been. The phase position of the crankshaft is relatively adjustable, so that the size of the horizontal stroke transmitted to the connecting member by the connecting rod can be adjusted. From the connecting member, the horizontal movement is transmitted directly to the bar support or is transmitted to the bar support via a connecting transmission arranged between the connecting member and the bar support. However, the known horizontal drive device requires a complex mechanism, which leads to insufficient needle bar stability and guidance, especially at high passage speeds. As a result, when a large reciprocating frequency is realized with a stroke adjustment possibility in a known device, there is a possibility that a problem relating to mechanical motion may occur.

  In a second embodiment of the drive technique in such a device, known for example from DE 10355590 A1, the vertical movement and the horizontal movement are carried out by one common drive device. In this case, two adjustable crankshafts are used in connection with two connecting rods arranged obliquely with respect to each other, and the connecting rod eyes of both connecting rods meet each other at one point. As a result, a movement similar to an ellipse is generated in which the horizontal stroke and the vertical stroke are variable in accordance with the phase rotation of the crankshaft. However, such a configuration is insufficient in terms of rotational speed stability, and the needle bar cannot be guided in parallel to the fleece web.

  In practice, however, it is increasingly desirable to need a fleece web with a high passing speed and a variable horizontal stroke as much as possible.

  For moving the needle bar by means of separate vertical and horizontal drive devices, a further device is known from the prior art DE 19615697. In this case, the horizontal drive device is formed by an eccentric drive device, which has a connecting rod that cooperates with the crankshaft. The connecting rod acts directly on the bar support with its connecting rod eye, and a needle bar is held on the lower surface of the bar support. Such a device certainly allows a high passing speed of the fleece web, but has the major disadvantage that the horizontal stroke cannot be variably adjusted.

  In another device known from DE 10043534A1 for needling a fleece web, the needle support is formed by a thrust bar guided in a swivel tube. The swivel tube is reciprocally swiveled around the swivel axis. In this case, the swivel pipe is swung around the swivel axis via the swivel transmission. This known device and swivel transmission are therefore not suitable for guiding the needle board parallel to the fleece web.

  The object of the present invention is therefore to improve a device for needling a fleece web of the type mentioned at the outset so that the fleece can be needled with high quality with variable stroke adjustment and high stroke vibration even at high passage speeds. Is to do so.

  In order to solve this problem, in the configuration of the present invention, the connecting rod is inclined and is connected to the horizontal link by the connecting rod eye, and the central axis of the connecting rod forms an angle between each other. I did it.

  Further advantageous embodiments of the invention are described in the subclaims.

  It has the particular advantage of the present invention, that is, in the device according to the invention, the force transmission of the two eccentric drives of the horizontal drive is spatially limited to a very narrow and compact engagement area. As a result, the drive motions of both eccentric drive devices are stably guided. The present invention is freed from the following reservation condition, that is, a horizontal drive device that generates a vertical motion component in addition to horizontal motion is not suitable for horizontal drive of the bar support at all. Yes. Since the vertical movement of the needle guided in the needle bar is effected exclusively by the vertical drive, the horizontal drive need only generate pure horizontal movement to offset the fleece web feed movement. As long as this is the case, it is possible to avoid the vertical motion component caused by the horizontal drive. However, the present invention recognizes that the combination of a connecting rod and a horizontal link held in an inclined position can be advantageously used to transmit a force directed exclusively in the horizontal direction to the bar support. Got. The motion component generated in the vertical direction via the eccentric drive device is captured by the horizontal link and is not transmitted to the bar support. In so far, the high flexibility of the stroke adjustment caused by the two eccentric drives can be advantageously combined with the stability and strength of the force transmission device.

  In order to obtain improved stability of the horizontal drive, in another advantageous configuration of the invention, the connecting rod eye of the connecting rod is connected to the horizontal link by one double rotary joint. If comprised in this way, the effect | action of force can be concentrated on one connection point guided together via an eccentric drive device. The double rotary joint is always guided by an eccentric drive along a track resembling an ellipse, the width and height of this track being related to the phase position of both eccentric drives. In extreme cases, a nearly vertical or exactly horizontal line is produced for the maximum or minimum horizontal stroke.

  In this case, the double rotary joint for connecting the connecting rods may be formed directly on one end of the horizontal link or may be formed on the connecting member of the connecting transmission device connected to the horizontal link.

  When using a coupled transmission, the force acting on the horizontal drive can be reduced. Furthermore, the guide in the axial direction of the needle bar can be advantageously stabilized.

  In order to obtain a high flexibility in the arrangement and configuration of the eccentric drive, in another advantageous configuration of the invention, alternatively, the connecting rod eye of the connecting rod is connected to the horizontal link by two rotary joints. Yes. In this case, the rotary joints are preferably formed directly at one end of the horizontal link, very close or somewhat offset from each other. However, basically, it is also possible to form the rotary joints of both connecting rods in one connecting member which is connected to the horizontal link via a connecting transmission.

  In order to change the magnitude of the stroke movement of the needle bar introduced by the eccentric drive device, in another advantageous configuration of the invention, the connection transmission device comprises a connection member coupled to the eccentric drive device and a swivel bearing. And a pivot lever that is held. In this case, the connecting member serves as a push rod and the horizontal link is preferably displaced from one another and engages the swiveling lever, whereby the eccentric movement is transmitted to the needle bar with a gear ratio. For example, even in a small eccentric motion of the eccentric drive device, a relatively large stroke can be introduced into the needle bar and vice versa.

  In order to allow not only stability but also sufficient horizontal movement of the eccentric drive, in another advantageous configuration of the invention, the angle of the connecting rod is such that the angle between the central axes of the connecting rods is 180 °. Is selected to be smaller. If comprised in this way, the arrangement | positioning form which is a compromise between the advantageous force transmission ratio in a connecting rod and the advantageous movement form is realizable.

  In this case, the crankshaft of the eccentric drive device is driven in the opposite direction, and the phase positions of both crankshafts are adjustable independently of each other in order to adjust the stroke.

  In another advantageous configuration of the invention, separate actuating motors are assigned to the crankshafts, and the phase position of the crankshaft can be adjusted by these actuating motors. The actuating motor can in this case be controlled in accordance with the desired stroke adjustment via one common control device.

  In another advantageous configuration of the invention, the end of the horizontal link is arranged in the central region of the bar support and is connected to the bar support by means of a rotary joint. If comprised in this way, irrespective of the vertical movement of a bar support body, the pushing force and tension | tensile_strength which are brought about for horizontal direction movement can be directly provided to a bar support body. This avoids loads due to bending moments acting on the bar support and transmission of vertical motion caused by the eccentric drive.

  It is particularly important that the position of the horizontal link is suitable for guiding the bar support in the longitudinal direction of the bar. For this purpose, in an advantageous configuration of the invention, the horizontal link extends substantially parallel to the lateral surface of the bar support and is provided with a stiffening shape imparting part for guiding the bar support in the longitudinal direction. Is formed. If comprised in this way, even if the horizontal drive device is not activated, the device can be reliably operated. In such a case, the bar support is simply driven by the vertical drive device and only moves up and down.

  In order to carry out a quality expensive needling of the fleece web, in another advantageous configuration of the invention, the needle is driven in the vertical direction by a vertical drive, which is formed by two eccentric drives. Each of the eccentric drive devices has a crankshaft and a connecting rod coupled to the crankshaft via a connecting rod head. The connecting rod is its connecting rod eye and is connected to the bar support via a rotary joint. Such a vertical drive provides high flexibility with respect to needle bar guidance and adjustment, and can be used to product-specifically various fleece webs with a wide variety of fibers.

  Next, embodiments of the present invention will be described with reference to the drawings.

1 is a side view schematically showing a first embodiment of a device according to the invention. FIG. 6 is a side view schematically showing another embodiment of the device according to the invention. FIG. 6 is a side view schematically illustrating yet another embodiment of the device according to the invention. FIG. 4 is a side view showing one embodiment of a horizontal driving device for the embodiment shown in FIGS. 1, 2, and 3. FIG. 4 is a side view showing another embodiment of the horizontal driving apparatus for the embodiment shown in FIGS. 1, 2, and 3. FIG. 6 is a side view schematically illustrating yet another embodiment of the device according to the invention.

  FIG. 1 shows a first embodiment of an apparatus according to the invention for needling a fleece web. The embodiment of the device according to the invention shown in FIG. 1 has a bar support 2 which holds the needle bar 1 on its underside. The needle bar 1 holds a needle board 3 having a large number of needles 4 on the lower side thereof. A stand 23 and a scraper 28 are assigned to the needle board 3 provided with the needle 4, and the fleece web 24 is guided at a substantially constant feed speed between the stand 23 and the scraper 28. . The direction of movement of the fleece web 24 is indicated by arrows in FIG.

  A vertical driving device 12 and a horizontal driving device 5 are engaged with the bar support 2. The bar support 2 is oscillated and moved in the vertical direction by the vertical drive device 12, and as a result, the needle bar 1 provided with the needle board 3 performs an up-and-down movement. The vertical drive device 12 is formed by two eccentric drive devices 12.1, 12.2 arranged in parallel to each other. The eccentric drive units 12.1, 12.2 have two crankshafts 25.1, 15.2, which are arranged in parallel to each other, and both crankshafts 25.1, 15.2 are supported by a bar. Located on the body 2. The crankshafts 25.1, 15.2 each have at least one eccentric section for receiving at least one connecting rod. FIG. 1 shows the connecting rods 13.1, 13.2 arranged on the bar support 2, these connecting rods 13.1, 13.2 being the connecting rod head and the crankshaft 25.1. , 25.2. The connecting rods 13.1, 13.2 are connected at their free ends to the bar support 2 by connecting rod rotary joints 14.1, 14.2. The crankshaft 25.1 and the connecting rod 13.1 and the connecting shaft 13.2, respectively, form an eccentric drive device together with the connecting rod 13.1, whereby the bar support 2 can be moved up and down. The crankshafts 25.1, 25.2 are driven synchronously in the same direction or in the opposite direction, so that the bar support 2 is guided at least substantially parallel.

  In addition, a configuration in which a plurality of vertical driving devices are engaged with the bar support is also possible. In such a configuration, the connecting rod is connected to the both end surfaces of the bar support 2 via the connecting rod rotary joint. Are connected to the bar support 2. In this case, an eccentric drive device of the same arrangement type is provided on the end surface of the bar support located on the opposite side (not shown).

  In order to superimpose the horizontal movement of the bar support 2, the horizontal drive 5 with the eccentric drive 5.1, 5.2 is engaged with the bar support 2. The horizontal driving device 5 is coupled to the bar support 2 via a horizontal link 15. For this purpose, the free end of the horizontal link 15 is arranged in the central region of the bar support 2 via the rotary joint 16. The opposite end of the horizontal link 15 is coupled to the eccentric drive devices 5.1 and 5.2 via the double rotary joint 10. In the illustrated embodiment, the eccentric drive devices 5.1, 5.2 are formed by two crankshafts 6.1, 6.2 arranged in parallel to each other. Both crankshafts 6.1, 6.2 each have at least one eccentric body section, whereby each can drive at least one connecting rod. For example, the connecting rod 7.1 is connected to the crankshaft 6.1 by its connecting rod head 8.1. The connecting rod 7.2 is connected by its connecting rod head 8.2 to a crankshaft 6.2 which is spaced apart. The connecting rods 7.1, 7.2 are oriented so as to be tilted toward each other, so that the connecting rod eye 9.1 of the connecting rod 7.1 and the connecting rod eye 9.2 of the connecting rod 7.2. 2 is connected to the horizontal link 15 by a double rotary joint 10 together. Thereby, the double rotary joint 10 forms one common connection point which serves for the force transmission of both eccentric drives 5.1, 5.2. For this purpose, the double rotary joint 10 is located at the intersection of the central axes of both connecting rods 7.1, 7.2, so that an angle is formed between the central axes of both connecting rods 7.1, 7.2. . This angle between the connecting rods 7.1, 7.2 is indicated in FIG. This angle α is mainly related to the position of the crankshaft 6.1, 6.2, and preferably has a value of less than 180 °, in which case the eccentric drive device 5.1 , 5.2, the horizontal displacement can be sufficiently horizontal at the common connection point. In this case, the angle α and thus the arrangement of the connecting rods is selected in such a way that a compromise is achieved between the advantageous force relationship and the advantageous movement shape in the connecting rod.

  In order to drive the bar support 2, the eccentric drive devices 5.1, 5.2 are driven synchronously in opposite directions. In this case, the double rotary joint 10 is guided along an elliptical track as a common connection point for both connecting rods 7.1, 7.2.

  The horizontal component of the motion is transmitted directly to the bar support 2 via the horizontal link 15 and the rotary joint 16. The vertical component of the motion produced by the eccentric drives 5.1, 5.2 causes only one rotational motion about the rotary joint 16 in the horizontal link 15. As a result, the vertical movement produced by the horizontal drive 5 has virtually no effect on the bar support 2 at the double rotary joint 10. The horizontal link 15 can only transmit a force in the horizontal direction via the rotary joint 10, and the horizontal force causes a corresponding horizontal movement of the bar support 2.

  For this purpose, the crankshafts 6.1, 6.2 can be driven together by one drive or individually via a separate drive. In order to adjust the stroke of the horizontal movement of the bar support, the phase position of the crankshafts 6.1, 6.2 is adjusted. The phase position of the crankshaft and thus the desired horizontal stroke is effected in the illustrated embodiment by two actuating motors 26.1, 26.2, which are shown schematically in FIG. Actuating motors 26.1 and 26.2 are assigned to crankshafts 6.1 and 6.2, respectively, and are connected to one common control device 27. This allows the control device 27 to adjust any combination of phase positions between the crankshafts 6.1, 6.2. The double rotary joint 10 is guided along a guide track, which in this case resembles an ellipse, as a common connection point, the width and height of this guide track being related to the phase position of both crankshafts. As an extreme case, a substantially vertical or precisely horizontal guide track is created for maximum or minimum horizontal travel.

  In the state shown in FIG. 1, the bar support 2 is located to the left from the neutral position with respect to its horizontal position, and at the upper intermediate position in the vertical direction. As driving proceeds, the bar support 2 is reciprocated along with the needle bar 1 in a stroke defined in the horizontal direction. In this case, the horizontal movement is performed in the feeding direction of the fleece web 24 when the needle 4 enters the fleece web 24, and as a result, almost no deformation or relative movement occurs between the needle 4 and the fleece web 24. do not do. In this case, the horizontal link 15 simultaneously guides the bar support 2 to the vertical drive device 12 at the same time, in particular in the longitudinal direction of the bar. For this purpose, the horizontal link 15 is formed with a shape which is useful for reinforcement, and this shape is indicated by the reinforcing ribs 17 in the illustrated embodiment. Since the bar support 2 is guided by a horizontal link 15 arranged beside the bar support 2, the bar support 2 can be reliably operated without the operation of the horizontal drive device 5.

  In the embodiment shown in FIG. 1, to drive the fleece web 24, the vertical drive 12 and the horizontal drive 5 are driven synchronously, in which case the downward movement of the bar support 2 is combined with the feed movement. As a result, the needle 4 can carry out a movement in the guide direction of the fleece web 24 inside the fleece web 24.

  In the embodiment shown in FIG. 1, one needle bar 1 is held on a bar support 2. However, basically, it is also possible to arrange a plurality of needle bars 1 on the lower surface of the bar support 2. One bar support 2 is guided by at least one vertical drive 12. There are often a plurality of such units in one machine, in which case each bar support does not have to be guided by at least one horizontal drive. For example, a plurality of bar supports may be combined with one needle bar, and when configured in this way, only one horizontal drive unit is composed of one needle bar and a plurality of bar supports. Will be guided in the machine.

  FIG. 2 schematically shows a side view of another embodiment of the device according to the invention. Since the embodiment shown in FIG. 2 is substantially the same as the embodiment shown in FIG. 1, only the differences between the two embodiments will be described below.

  In the embodiment shown in FIG. 2, the bar support 2 holds two needle bars 1.1, 1.2, respectively, and these needle bars 1.1, 1.2 are respectively on the lower surface thereof. One needle board 3 and a plurality of needles 4 are provided. The bar support 2 is connected to a vertical drive device 12 configured in the same manner as in the first embodiment. In order to move the bar support 2 in the horizontal direction, the bar support 2 is connected to the horizontal link 15 via a central rotary joint 16. In this embodiment, the rotary joint 16 is arranged on the bar support 2 at approximately the same height as the connecting rod joints 14.1, 14.2, so that it is arranged on the side of the bar support 2, ie on both sides. The horizontal link 15 allows guidance directed to the force introduction in the bar support 2.

  A horizontal drive 5 is provided for moving the horizontal link 15, and this horizontal drive 5 is formed by eccentric drive 5.1, 5.2. In this case, the eccentric drive devices 5.1 and 5.2 have crankshafts 6.1 and 6.2, respectively. These crankshafts 6.1 and 6.2 are different from the embodiments already described. It is arranged on the bar support 2. As a result, the crankshaft drive devices of the vertical drive device 12 and the horizontal drive device 5 can be arranged on one common machine plane.

  For transmission of force between the horizontal drive device 5 and the horizontal link 15, a connecting transmission device 18 is provided. In the illustrated embodiment, the connecting transmission 18 comprises a swivel lever 20, which is supported by a swivel bearing 21 so as to be swivelable. The swivel lever 20 has a rotary joint 22.2 at a free end located below the swivel bearing 21, and the horizontal link 15 is coupled to the swivel lever 20 by this rotary joint 22.2. The swivel lever 20 is L-shaped and has a second rotary joint 22.1 at the second free end, which acts as a push rod 19 on the second rotary joint 22.1. The connecting member is engaged. The push rod 19 is connected to the connecting rod eye 9.1, 9.2 which is the small end of the connecting rod 7.1, 7.2 by the double rotary joint 10 at the opposite end. The connecting rods 7.1, 7.2 are arranged in an inclined state, and the connecting shafts 8.1, 8.2, which are the large ends of the connecting rods 7.1, 7.2, are arranged side by side in parallel with each other. , 6.2. The central axes of the connecting rods 7.1, 7.2 form an angle α between them, which in this embodiment also has a value smaller than 180 °.

  The crankshafts 6.1, 6.2 are driven in the opposite directions and at the same speed, in which case the phase positions of the crankshafts 6.1, 6.2 are adjusted relative to each other in relation to the desired horizontal stroke. Yes. In this case, the adjustment of the phase position in the crankshafts 6.1, 6.2 can be carried out as already described in the embodiment of FIG.

  When the crankshafts 6.1, 6.2 are driven, the connecting rods 7.1, 7.2 are moved so that the connecting rods 7.1, 7.2 are connected to the double rotary joint 10 at a common connection point. Move along the guide track. This movement transmitted directly to the push rod 19 is transmitted from the push rod 19 to the horizontal link 15 via the turning lever 20. As the rotary joint 22.1 of the push rod 19 and the rotary joint 22.2 of the horizontal link 15 are offset from each other, the stroke movement produced by the eccentric drives 5.1, 5.2 is It is transmitted to the bar support 2 with a gear ratio. Therefore, compared to the double rotary joint 10, the bar support 2 performs a small stroke movement, in this case changed by the transmission ratio.

  The embodiment shown in FIG. 2 of the device according to the invention is for coupling the two eccentric drive devices 5.1, 5.2 of the horizontal drive device 5 to the horizontal link 15 via a connecting transmission 18. It just shows another possibility. In this embodiment, the force transmission of the horizontal link 15 in the bar support 2 and the stroke movement of the horizontal link 15 in the bar support 2 can be influenced. Furthermore, great flexibility is obtained in the arrangement form of the horizontal drive device. For example, the eccentric drive devices 5.1, 5.2 of the horizontal drive device 5 and the eccentric drive devices 12.1, 12.2 of the vertical drive device 12 can be arranged on one common upper machine plane. is there.

  Basically, however, there is also the possibility of further changing the embodiment shown in FIG. 1 to arrange the connecting transmission 18 between the horizontal drive 5 and the horizontal link 15. Such a configuration is shown, for example, in FIG. The embodiment shown in FIG. 3 is substantially the same as the embodiment shown in FIG. 1, the only difference being that the connecting transmission 18 is arranged in between. In the embodiment of FIG. 3, the connecting transmission 18 is formed by a pivot lever 20 and a connecting member 19, in which case the connecting member is likewise formed as a push rod 19. The swivel lever 20 is held by a swivel bearing 21 and has a rotary joint 22 for coupling the horizontal link 15 to a lower end portion located below the swivel bearing 21. At the upper end on the upper side of the swivel bearing 21, the swivel lever 20 is coupled to the push rod 19 via a rotary joint 22.1. The push rod 19 is connected to the connecting rods 7.1 and 7.2 of the eccentric drive devices 5.1 and 5.2 via the double rotary joint 10.

  Since the eccentric drive devices 5.1, 5.2 of the horizontal drive device 5 are formed in the same way as the embodiment shown in FIG. 1, further explanation thereof is omitted. By providing the coupling transmission device 18 between the eccentric drive devices 5.1, 5.2 and the horizontal link 15, the desired transmission ratio is adjusted according to the configuration of the lever mechanism of the coupling transmission device 18 respectively. can do. For example, it is possible to influence the horizontal stroke and force introduction in the bar support 2 for guiding the needle bars 1.1, 1.2.

  In the embodiment shown in FIG. 3, the bar support 2 holds two needle bars 1.1, 1.2. Each needle bar has a needle board 3 having a plurality of needles 4. Needle bars 1.1 and 1.2 are arranged corresponding to a table (not shown), on which the fleece web is guided.

  The vertical drive 12 that engages the bar support 2 is the same as in the previously described embodiment, so further explanation is omitted.

  In the embodiment shown in FIGS. 1 to 3 of the device according to the invention, the movement of the horizontal drive 5 is caused by a common connection formed by the double rotary joint 10 via both connecting rods 7.1, 7.2. Given by points. Basically, however, the connecting rod eyes 9.1, 9.2, which are the small ends of the connecting rods 7.1, 7.2, are shifted to the horizontal link 15 or, for example, the connecting member of the push rod 19 It is also possible to couple to. For example, in the arrangement shown in FIG. 4, the connecting rods 7.1, 7.2 of the eccentric drive devices 5.1, 5.2 are displaced from each other and are connected to the horizontal link 15 by the rotary joints 11.1, 11.2. It is connected. The rotary joints 11.1, 11.2 are held with their rotational axes shifted from each other. The magnitude of the deviation shown in FIG. 4 is chosen as an example. The connecting rods 7.1, 7.2 of the eccentric drive devices 5.1, 5.2 in this case likewise form an angle α between their central axes, and the rotation of the rotary joints 11.1, 11.2. The axis does not necessarily have to be located at the apex of this angle α. In the configuration shown in FIG. 4, the crankshafts 6.1 and 6.2 are held displaced from each other, so that the connecting rods 7.1 and 7.2 are formed with the same length. Basically, however, it is also possible to form the connecting rods 7.1, 7.2 with different lengths, in which case the crankshafts 6.1, 6.2 are arranged vertically. It can be held in one oriented machine plane.

  FIG. 5 shows another variant embodiment for forming the horizontal drive 5. In this case, the rotary joints 11.1, 11.2 for connecting the connecting rods 7.1, 7.2 are formed offset in the vertical direction. The connecting rod eyes 9.1, 9.2 are connected to the horizontal link 15 via the rotary joints 11.1, 11.2. Crankshafts 6.1 and 6.2 assigned to connecting rods 7.1 and 7.2 are connected to connecting rods 7.1 and 7.2 via connecting rod heads 8.1 and 8.2 which are large ends. Combined with.

  In the variant embodiment shown in FIGS. 4 and 5 for connecting the horizontal drive 5 to the horizontal link 15, the rotary joints 11.1, 11.2 are formed on the horizontal link 15, respectively. Basically, however, it is also possible to form the rotary joints 11.1, 11.2 on the connecting member of the connecting transmission, for example on the push rod 19 of the connecting transmission 18 shown in FIGS. is there.

  FIG. 6 schematically shows a side view of another embodiment of the device according to the invention. Since this embodiment is almost the same as the embodiment shown in FIG. 2, the description of the device portion already described is omitted, and only the differences will be described here.

  In the embodiment shown in FIG. 6, the horizontal drive device 5 is formed by eccentric drive devices 5.1, 5.2. The crankshafts 6.1, 6.2 of the eccentric drives 5.1, 5.2 are one machine plane together with the crankshafts 25.1, 25.2 of the vertical drive 12 above the bar support 2. Is arranged. The connecting rods 7.1 and 7.2 assigned to the eccentric drive devices 5.1 and 5.2 of the horizontal drive device 5 are coupled to the horizontal link 15 via the connecting transmission device 18. The connecting transmission 18 is formed by a turning lever 20 and a push bar 19. In this case, the connecting rods 7.1 and 7.2 are engaged with the free end of the push rod 19 via the double rotary joint 10. A pivot lever 20 is coupled to the opposite end of the push rod 19 via a rotary joint 22.1. The swivel lever 20 having a vertically long shape is rotatably supported by a swivel bearing 21 in the central region. At the end opposite to the rotary joint 22.1, the swivel lever 20 is connected to the horizontal link 15 by another rotary joint 22.2.

  The connecting rods 7.1, 7.2 have an angle of less than 180 ° between their central axes.

  Unlike the embodiment shown in FIG. 2, in the embodiment shown in FIG. 6, the phase adjusting device is assigned to the horizontal driving device 5. For this purpose, the first operating motor 26.1 is engaged with the crankshaft 6.1, and the second operating motor 26.2 is engaged with the crankshaft 6.2. The actuating motors 26.1, 26.2 can be controlled independently of one another via the control device 27. By activating both actuating motors 26.1, 26.2 or by activating only one motor, the phase position of the crankshafts 6.1, 6.2 can be adjusted relatively. As a result, the operating trajectory of the double rotary joint 10 can be changed. The double rotary joint 10 forming the connecting point of the connecting rods 7.1, 7.2 always moves along an ellipse-like track whose width and height are related to the phase position of both crankshafts. is doing. In extreme cases, an almost horizontal straight line or an exactly vertical straight line is produced for maximum or minimum horizontal travel. By adjusting the phase position of the crankshafts 6.1, 6.2 in this way, the desired length of the horizontal stroke can be advantageously adjusted each time.

  In this case, the movement of the connecting rod is particularly advantageously transmitted to the bar support 2 via the push rod 19, the horizontal link 15 and the swiveling lever 20, so that the direction of movement is reversed. Thereby, at least a part of the inertial force in the horizontal direction can be canceled. By appropriately selecting the length ratio, the influence of the horizontal link 15 on the movement of the needle bar can be compensated by the push bar 19, so that a straight guide track with a very good approximation is produced at the zero stroke. The In this embodiment, the crankshafts 6.1 and 6.2 of the horizontal driving device 5 are driven in opposite directions. The direction of movement of the crankshafts 6.1, 6.2 is indicated by arrows in FIG.

  The device according to the invention is particularly suitable for carrying out mechanical needling of the fleece web with a high production capacity and a high production rate in a variable horizontal stroke. In particular, due to the high stability of the horizontal drive despite variable stroke adjustment, uniform and high needling quality can be obtained both in the construction of the fleece and at very high production rates. Furthermore, a very compact structural form is obtained which requires little space. In addition, the transmission device movement mechanism for controlling the horizontal link is simple, and the horizontal link for guiding the bar support in the axial direction is provided with a reinforcing shape, so that a small number of members are provided. And a structure having a small mass. Thereby, a very high motion frequency of the bar support can be obtained by the compact structure type allowing a rigid structure of the machine frame.

  The vertical driving device and the horizontal driving device may be operated synchronously or asynchronously to move the bar support. In this case, since the eccentric drive device can be driven with the phase adjusted arbitrarily, high flexibility is provided in the motion control of the bar support.

  1, 1.1, 1.2 Needle bar, 2 bar support, 3 Needle board, 4 Needle, 5 Horizontal drive, 5.1, 5.2 Eccentric drive, 6.1, 6.2 Crankshaft, 7.1, 7.2 connecting rod, 8.1, 8.2 connecting rod head, 9.1, 9.2 connecting rod eye, 10 double rotary joint, 11.1, 11.2 rotary joint, 12 vertical drive Device, 12.1, 12.2 eccentric drive device, 13.1, 13.2 connecting rod, 14.1, 14.2 connecting rod joint, 15 horizontal link, 16 rotating joint, 17 reinforcing rib, 18 connecting transmission device , 19 connecting member, push rod, 20 slewing lever, 21 slewing bearing, 22.1, 2.2.2 rotary joint, 23 pedestal, 24 fleece web, 25.1, 25.2 crankshaft, 26.1, 26. 2 Actuating motor, 27 control device, 28 scraper

Claims (13)

An apparatus for needling a fleece web, comprising at least one needle bar (1), the needle bar (1) having a number of needles (4) on its lower surface (3) And a bar support (2) movably held for holding the needle bar (1) is provided, and the bar support (2) is oscillated in the vertical direction. And a vertical drive device (12) coupled to the bar support (2) and a horizontal drive device (5) working to vibrate the bar support (2) in the horizontal direction. The horizontal drive (5) comprises at least one horizontal link (15) coupled to a bar support (2) and at least two eccentric drives (5.1, 1) coupled to the horizontal link (15). 5.2) The eccentric drive device (5.1, 5.2) has one connecting rod (7.1, 7.2) and a connecting rod head (8.1, 7.2) of the connecting rod (7.1, 7.2). , 8.2) and a crankshaft (6.1, 6.2) connected to
The connecting rod (7.1, 7.2) is inclined and connected to the horizontal link (15) by the connecting rod eye (9.1, 9.2). The connecting rod (7.1, 7) A device for needling a fleece web, characterized in that the central axes of .2) form an angle (α) between them.   2. The connecting rod eye (9.1, 9.2) of the connecting rod (7.1, 7.2) is connected to the horizontal link (15) by one double rotary joint (10). Equipment.   The double rotary joint (10) is formed directly on one end of the horizontal link (15) or on the connecting member (19) of the connecting transmission (18) connected to the horizontal link (15). The apparatus of claim 2.   The connecting rod eye (9.1, 9.2) of the connecting rod (7.1, 7.2) is connected to the horizontal link (15) by two rotary joints (11.1, 11.2). The apparatus of claim 1.   The rotary joint (11.1, 11.2) is formed directly on one end of the horizontal link (15) or the connecting member (19) of the connecting transmission (18) connected to the horizontal link (15). The device according to claim 4, wherein the device is formed.   The connecting transmission (18) is formed by a turning lever (20) and a connecting member (19) held via a turning bearing (21), and the connecting member (19) double-rotates at one end as a push rod. Connected to the connecting rod eye (9.1, 9.2) of the connecting rod (7.1, 7.2) via the joint (10) or the rotary joint (11.1, 11.2) and the other end Is connected to the turning lever (20), the horizontal link (15) is connected to the turning lever (20), and the leg length of the turning lever (20) gives the transmission ratio in the connecting transmission (18). The device according to claim 3 or 5.   7. The device according to claim 6, wherein the connecting member (19) and the horizontal link (15) are offset from each other and are connected to the swivel lever (20) via a rotary joint (22.1, 2.2.2).   The inclination of the connecting rod (7.1, 7.2) is selected such that the angle (α) between the central axes of the connecting rod (7.1, 7.2) is smaller than 180 °. A device according to any one of claims 1 to 7.   The crankshafts (6.1, 6.2) of the eccentric drive device (5.1, 5.2) can be driven in opposite directions, and the phase positions of both crankshafts (6.1, 6.2) are 9. A device according to any one of the preceding claims, wherein the device is adjustable to adjust the stroke.   Actuating motors (26.1, 26.2) are respectively assigned to the crankshafts (6.1, 6.2) to adjust the phase position, and the operating motors (26.1, 26.2) 10. The device as claimed in claim 9, wherein the device is configured to be controllable via the control device (27) independently of each other.   11. The horizontal link (15) is connected at its end to the bar support (2) by means of a rotary joint (16) in the central region of the bar support (2). The device described.   The horizontal link (15) extends substantially parallel to the lateral surface of the bar support (2), and the shape imparting portion (17) having a reinforcing function for guiding the bar support (6) is provided in the longitudinal direction. 12. The apparatus of claim 11, comprising:   The vertical drive device (12) is formed by two eccentric drive devices (12.1, 12.2), and both eccentric drive devices (12.1, 12.2) are respectively crankshafts (25.1, 25). .2) and connecting rods (13.1, 13.2) coupled to the crankshaft, the connecting rods support the bars via connecting rod joints (14.1, 14.2). Device according to any one of claims 1 to 12, coupled to a body (2).

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